Fly-escape for window-screens.



J. KRESS.

FLY ESCAPE FOR WINDOW SCREENS.

APPLICATION FILED APR. 6, 1910. 970,723.

- Patented Sept 20,1910.

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JOSEPH KRESS, OF'BISBEE, ARIZONA TERRITORY.

FLY-ESCAPE FOR WINDOW-SCREENS.

Specification of Letters Patent.

Patented Sept. 20, 1910.

Application filed April 6, 1910. Serial No. 553,818.

To all whom. it may concern:

Be it known that I, JOSEPH KREss, citizen of the United States, residingat Bisbee, in the county of Cochise and Territory of Arizona, haveinvented certain new and useful Improvements in' Fly-Escapes forWindow-Screens, of which the following is a specification.

My invention relates to window-screens and the object of the inventionis to provide means whereby flies on the inside of the screens mayescape.

I have discovered in practice that where flies are confined within aroom, the window of which is barred by a window screen, they willendeavor to escape by climbing up the screen and finding an outlet atthe upper portion thereof. The tendency of the fly is always to moveupward in an attempt to find a Way to escape, and hence I have provideda screen, the upper portion of which is open or held spaced from theframe supporting the screen so as to permit flies to escape.

M invention is shown in the accompanying rawings, wherein:

Figure 1 is a perspective view of my improved Window screen; Fig. 2 is alongitudinal section thereof; and, Fig. 3 is a transverse sectionthereof on the plane indicated by the line 33' of Fig. 2.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

In these drawings 2 designates the frame of the window-screen which isshown as rectangular and provided with a transverse bar 3 located. atabout the middle of the screen. This frame 2 is provided with upper andlower wire gauze sections 4 which are held in place by cross strips 5and by longitudinal strips 6. The upper portion of each gauze section 4is held apart from the frame and from the transverse bar 3 by means ofspacing members so that the gauze sections of the screen are open alongtheir entire upper margins.

As a preferable means of holding the upper margins of the gauze sectionsfrom the screen, I provide transverse metallic strips 7 which areattached at their ends to the frames and are held spaced from the frameby means of the U-shaped spacing members 8, these being attached to theunder edges of the screen frame and the transverse strip 7 in anysuitable manner.

In order to secure the wire screen 4 to the transverse extending bar 7 Imay use the U-shaped clips 9. These clips may be from 1 to 3 incheslong, and will go over the screen and downward between the bar 7 andspacing members 8, as shown in the upper part of Fig. 2.

I have shown the window-screen frame with two sections of wire gauze,both of these sections being open along their entire upper margin. Iwish it understood that it is within my invention to form the screenwith one section of wire gauze extending entirely over the whole of thescreen and open at its upper margin as above described.

My invention is simple, and I have found it to be thoroughly effectivein practice. Flies alighting upon the gauze sections will endeavor tomake their escape by climbing up the screen, and in doing so willeventually reach the opening of the upper margin thereof and pass out tothe open air.

Having thus described the invention, what is claimed as new is:

1. A window screen comprising a rectangular frame, wire gauze held incontact with the frame at its lower and side margins, a transversemetallic strip extending across the upper margin of the wire frame, andspacing members disposed between the transverse strips and the face ofthe frame, each spacing member having'a flange attached to the underface of the cross bar of the frame, then extending upward alon the faceof the cross bar, then outward an then downward, and then upward intoengagement with the transverse strip.

2. A window screen comprising a rectangular frame, wire gauze held incontact with the frame at its lower and side margins, transversemetallic strips extending across the upper margin of the wire gauze andattached at its ends to the side bars of the frame, and spacing membersdisposed between the middle portion of the trans verse strip and theface of the frame and attached to the adjacent cross bar of the frame,each spacing member having a portion engaging with the face of the crossbar, then extending outward at its upper end, then downward and thenbeing bent upward to form a clip en aging on each side of the transversemetallic strip.

bar, then outward, then downward and then 3. A window screen comprisinga rectangular frame, wire gauze held in contact with the frame at itslower and side margins, transverse metallic strips extending across theupper margin of the wire gauze and attached at their ends to the sidebars of the frame, the middle portion of the strip be-'' ing outwardlybent, and spacing members disposed between the middle portion of thetransverse strip and the face of the frame, each having a flangeattached to the under face of the adjacent cross bar of the frame, thenextending up along the face of the bent upward upon itself to receiveand clasp the transverse metallic strip, and U-shaped clips extendingover the upper edge of the wire gauze and the transverse metallic strip,binding the wire gauze t0 the strip and clamping the strip in itsengagement with the spacing member.

In testimony whereof, I affix my signature in presence of two witnesses.

LoUIs SCHNARR, A. C. KARGER.

